TM 55-607/NAVSEA OP 3221 Rev 2
Table C-5. Allowable Withdrawal Loads for Wood Renews-- Normal Duration. (See Table B 3 for Species of Wood).
Allowable load in withdrawal in pounds per inch of penetration of threaded
g = gauge of screw. D = shank diameter in inches.
part into side grain of member holding point.
G = specific gravity of the wood based on weight
and volume when oven-dry.
Specific
Size
gravity
g=
6
7
8
9
10
12
14
18
18
20
24
G
D= 0.138 0.151
0.184
0.177
0.190
0.218
0.242
0.288
0.294
0.320
0.372
.75
222
242
283
284
306
347
388
430
471
514
597
.68
182
199
218
233
251
285
319
353
387
422
490
.67
177
193
210
227
243
276
310
343
376
410
476
.66
171
188
204
220
238
268
300
333
365
397
461
. .62
151
166
180
194
208
237
285
294
322
351
407
.55
118
130
141
152
164
186
208
231
253
275
320
.54
114
128
138
147
158
180
201
224
245
286
310
.51
102
112
121
131
141
160
179
199
218
237
276
.48
91
99
108
118
125
142
159
176
193
210
244
.47
87
95
103
111
120
136
152
169
185
201
234
.46
83
91
99
107
115
130
146
162
177
193
224
.45
80
87
95
102
110
125
140
155
170
185
215
.44
76
83
91
97
105
119
133
148
162
177
205
.43
73
80
86
93
100
114
127
141
155
169
196
.42
69
76
82
89
95
109
121
135
148
161
187
.41
66
72
79
85
91
103
116
128
141
153
178
.40
65
71
77
83
89
102
113
126
138
151
175
.39
61
66
72
78
84
95
106
118
130
141
164
.38
57
62
67
73
78
89
99
110
121
132
153
.37
54
59
64
69
74
84
94
104
115
125
145
.36
51
56
60
65
70
80
89
99
109
118
137
.34
46
50
54
58
63
71
80
88
97
105
123
.31
38
42
45
48
53
59
67
73
81
88
103
Approximately two-thirds of the length of a standard wood screw is threaded.
C-5
